Punching-machine.



No. 893,428. PATENTED JULY 14, 1908.

J. L. BERNARD. PUNGHING MACHINE.

APPLICATION FILED JAN.6. 1908.

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INVENI'OR W ITNESSES 1) (gummy-J Mu i No. 893,428. I PATENTED JULY 14, 1908. J. L. BERNARD.

PUNGHING MACHINE.

APPLIUATION FILED JAN. 6, 1908.

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WITNESSES PATENTED JULY 14., 1908.

J. L. BERNARD.

PUNCHING MACHINE. APPLICATION FILED JAN. s, 1908..

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PATENTED JULY 14, 1908.

J. L. BERNARD.

PU-NGHING MACHINE.

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' wheels 8, which are adapted to travel upon' UNTTE E l JAMES L. BERNARD, OF AMBRIDGE, PENNSYLVANIA.

PUNCI-IING-MAGHIN E To all whom it may concern:

Be it known that I, J AMES L. BERNARD, of Ambridge, Beaver county, Pennsylvania, have invented a new and useful Punching- Machine, of which the following is a full,

clear, and exact description, reference being had to the accompanying drawings, forming part of this specification, in which- Figure 1 is a plan view of the central portion of a machine embodying my invention, with the housings of the punch in section; Fig. 2 is a side elevation of the same with the housings broken away; Fig. 3 is a section on the line III-III of Fig. 1 Fig. 4 is a longitudinal section through the central portion of the machine; Fig. 5 is a transverse section on the line VV of Fig. 1 Fig. 6 is a partial transverse section taken on the line VIVI of Fig. 1; Fig. 7 is a detail view showing one of the cylinder couplings; Fig. 8 is a face view of one of the joint iianges on the cylinder sections; and Fig. 9 is a longitudinal section of a portion of the piston or plunger.

My invention has relation to punching machines, and is designed to provide means of eflicient and practical character for moving the work to the punches.

In machines of the class to which my invention relates, a templet is usually employed as a guide to the punching operations, and my invention provides means whereby the work may be moved to the punches and stopped at the exact point indicated by the templet, whereby accuracy of the punching is insured together with rapidity of operation.

The precise nature of my invention will be best understood by reference to the accom panying drawings, in which I have shown one embodiment of my invention, and which will now be described, it being premised, however, that various modifications may be made therein by those skilled. in the art with out departing from the spirit and scope of my invention.

In these drawings, the numeral 2 designates the frame of the machine, which may be of any desired length, and which is suitably supported at intervals as indicated at 3. Extending longitudinally of this frame are track rails 4, upon which are mounted the two carriages 5 and 6 upon opposite sides of the punching machine proper which is indicated at 7. Each of these carriages has the tracks 4. Each carriage is also provided with suitable grips or clamps 9 for the ends of Specification of Letters Patent.

Application filed January 6, 1908.

Patented July 14, 1908.

Serial No. 409,423.

the work, the work forming the connection between the two carriages 5 and 6. For the purpose of holding the carriage 5 steady in its travel and preventing side motion thereof, it is provided with a depending bracket 10 (see Fig. 5), which carries upper and lower wheels or rollers 11, which are arranged to travel upon opposite sides of the track plates or bars 12, which are supported upon the fixed channels or other supports 13. The bracket 10 is shown as consisting of an T- beam, which is connected to the frame of the carriage 5 by means of the T-bar 14. The bracket 10 also has the supports secured to opposite sides thereof in which are journaled the horizontal rollers 16, which bear against the inner edges of the track plates or bars 12.

Mounted upon the carriage 5 for effecting its return movement in the manner hereinafter described, is an electric motor 17, which through a train of reducing gearing 18 drives large toothed wheels 19 on the ends of the carriage, the teeth of which engage toothed rack bars 20 which are supported on brackets or angles 21 secured to the side plates of the frame 2. This motor may conveniently derive its current by means of the trolley wheels 22 which are journaled in a depending trolley arm 23. This trolley arm is secured to one end of the carriage and projects downward and laterally therefrom in such position that the wheels 22 are in contact with the conductor strips 24, which are carried on the under side of a support 25 secured to the side plates of the frame 2.

The work to be punched (shown at AA in Figs. 5 and 6) is supported intermediate the two carriages at each side of the punching machine by the wheels or disks 26, which are ournaled on the short transverse shafts 27, as best shown in Fig. 5.

28 designates a templet bar or strip,

which extends longitudinally of the machine at one side thereof. This strip may be conveniently carried by an T-beam 29, which is supported by tracks 30 which depend from lateral extensions 31 of the frame of the carriage 5, and which is adapted to travel upon a series of anti-friction rollers 32,

which are journaled on lateral projections 33 of the side members of the frame 2. The construction just described is such that as the carriage moves back and forth on the tracks 4, the I-beams 29 with the templet thereon will move with the carriage, being guided by the rollers 32.

34 is a long piston or plunger, which at one end is connected to the carriage 5. This connection (see Figs. 3 and 5) may be conveniently effected by means of a T-bar 35, which is secured to the lower flange ofthe I-beam 10 before referred to, and whose depending web member engages a slot in the solid end portion of the piston or plunger, and is secured therein by screw-bolts 36 or other suitable means. This iston or plunger may be a solid shaft, but prefer to construct it of hollow sections suitably jointed to each other, tion 34 (see Fig. 9), which is connected to the carriage 5 in the manner just described. The preferred manner of securing these sections is shown in Fig. 9. As they are shown, adjacent sections are connected by means of an interior sleeve 37 which extends across the joint, the meeting ends of the piston sections being slightly rounded off or cut away at their inner edge portions as indicated at 38 to receive the centering flange or projection 39 of the sleeve 37. The sections of the piston may be made of brass or bronze, and the sleeve 38 of similar material, in which case it will preferably be secured in place by brazing its outer surface to the inner surfaces of the piston section. The end section 34 is shown as being secured to the adjacent hollow section by means of an internal plug 40, over the tapered end portions of which the res ective sections are driven against the lange 41. The section 34 is also shown as secured to the plug 40 by a pin 42. The tapered end of the plug 40 over which the section 34 is driven terminates in a reduced portion 43, and the section 34 is shown as having a transverse opening or slot 44 therethrough beyond the end of this reduced portion 43 of the plug, so that when the pin 42 has been driven out a suitable tool can be inserted through said slot or opening for the purpose of facilitating the removal of the section 34 The piston or plunger 34 works in a cylinder 45, and is carried and guided between the end of the cylinder and the carriage 5 by means of suitable supports 46 (see Figs.

3 and 4). The piston passes through an opening 47 in the bed portion 7 of the unching machine 7. (See Fig. 4.)

The cylinder 45 is preferably constructed in sections, as best shown in Figs. 4 and 7. These sections are formed at their meeting ends with opposing flanges 48, which are con nected by bolts 49 with interposed packing 50. The piston is supported and guided within the cylinder at these joints by means of the inset rings or sleeves 51 (see Fig. 7

These rings or sleeves are formed with the longitudinal grooves or slots 52 for the passage of the actuating fluid therethrough.

with a solid end sec The end of the cylinder through which the piston or plunger 34 passes, is formed by a head 53 (see Fig. 4) having a stufling box 54, and into which leads an inlet port 55 which is connected by supply pipe 56 with an inlet valve 57. This inlet valve may be controlled manually by a lever 58, or it may be arranged to be operated automatically in any desired manner. The actuating fluid passes by way of the supply pipe 56 into the head 53 and thence back around the piston 34 to the outer closed end of the cylinder 45, and thence into the piston. As long as the liquid is allowed to enter this plunger, the plunger is forced out of the cylinder 45 and moves the carriage 5 away from the punch. The ma terial being clamped to the carriage will be drawn through the punch. By means of the valve 57 the water can be shut off at any time, causing the instant stoppage of the carriage at any predetermined point.

The templet 28 has scribed thereon lines or markings to indicate where the holes are to be punched in the materialwhich is drawn through the punching machine. The table is provided with a fixed mark, and when a scribed line on the templet is opposite this mark on the table, the valve 57 is closed and the moving carriages and material come to rest. The punching machine is then operated and the material is punched. After the punches have been Withdrawn the valve 57 is again opened and the plunger and carriage again moved forward until the next scribed line on the templet comes opposite the fixed mark on the table. This operation is repeated until the piece or pieces have been fully punched. The valve 57 is then closed, and the electric motor 17 is operated to move the carriage quickly back along the table2 toward the punch.

The hydraulic means described for operating the carriages is of particular advantage in that the moving parts may be brought instantly to rest by shutting off the water or other liquid supply, there being no further movement due to expansion as is the case where an elastic medium such as compressed air is employed.

Other advantages of my invention will be apparent to those skilled in the art. The two carriages 5 and 6 are independent of each other, being connected in operation only through the work which is clamped thereto. This permits the carriages to be separated or brought together to any desired extent to suit work of any length. The frame or table of the machine can be made of any desired length to suit the machine for use with beams and other structural parts of great length, the construction and arrangement of the cylinder and plunger or piston being such that it may also be made of the necessary length.

While the frame construction has not been described in detail, since it constitutes no essen-tial part of my invention, it will be noted from the drawing that I have shown it as composed largely of structural shapes which can be readily assembled and built up, and which provide a strong and durable construction suitable for heavy work.

While I prefer to employapiston or plunger made up of hollow sections in the manner de scribed, it is obvious that if desired a solid plunger may be employed.

What I claim is 1. In a punching machine, a supporting frame, extending to both sides of the punch proper, tracks extending longitudinally of said frame at both sides of the punch, a worksupporting carriage mounted on the tracks at each side of the punch, and having means for holding one end portion of the work, and motive means for said carriages; substantially as described.

2. In a punching machine, a frame or support, tracks mounted thereon and extending in both directions from the punch proper, in dependent carriages mounted on said tracks at opposite sides of the punches proper, said carriages having means for securing the work thereto, a hydraulic cylinder, and a piston or plunger working therein and connected to one of said carriages; substantially as described.

3. In a punching machine, a frame or support, tracks mounted thereon, a carriage mounted on said tracks, a hydraulic cylinder, a piston working in said cylinder and connected to the carriage, and a second motor mounted on the carriage for moving it in the opposite direction from the movement effected by the piston or plunger; substantially as described.

4. In a punching machine, a frame or support, tracks mounted thereon and extending longitudinally at each side of the punch proper, independent carriages or supports mounted on said tracks, a hydraulic cylinder, a plunger working in the cylinder and connected to one of said carriages or supports, means for securing the work to the carriages or supports, and a templet secured to and movable with one of said carriages or supports; substantially as described.

5. In punching apparatus, a punching machine proper, tracks extending at both sides of said machine, independent carriages mounted 011 said tracks at opposite sides of the punching machine and having means for securing the work thereto, a hydraulic cylinder, a piston working in said cylinder and secured to one of said carriages, a templet support carried by the last named carriage, and a series of guides extending along one side of the'machine and upon which the templet support is adapted to travel as it moves with the carriage; substantially as described.

6. In punching mechanism, a punching machine, tracks extending longitudinally at each side of the punching machine, worksupporting carriages for the work mounted on said tracks, an elongated piston connected to one of said carriages and extending longitudinally below the tracks, and an elongated cylinder for said piston, composed of flanged jointed sections having at intervals internal supporting sleeves or rings for the piston; substantially as described.

7. In punching mechanism, va punching machine, tracks extending longitudinally at each side of the punching machine, work supporting carriages for the work mounted on said tracks, an elongated piston connected to one of said carriages andextendinglongitudinally below the tracks, and an elongated cylinder for said piston composed of flanged jointed sections having at intervals internal supporting sleeves or rings for the piston, said sleeves or rings having liquid passages formed therein; substantially as described.

8. In punching mechanism, a punching machine, tracks extending longitudinally at each side of the punching machine, worksupporting carriages for the work mounted on said tracks, an elongated piston connected to one of said carriages and extending longitudinally below the tracks, and an elongated cylinder for said piston, said piston being composed of a number of jointed, hollow pipe sections and a solid end section secured to the adjacent hollow section; substantially as described.

9. In punching mechanism, a punching machine, tracks extending longitudinally to each side of the punching machine, a carriage mounted on said tracks at each side of the punching machine, said carriages being independent of each other and having means for securing thereto the opposite end portions of the parts to be punched, the motive devices for actuating the carriages, and a longitudinally extending templet bar at one side of the machine and connected to one of the carriages to move therewith; substantially as described.

10. In punching mechanism, a punching machine proper, tracks extending at opposite sides of said machine, independent carriages mounted on said tracks at opposite sides of said machine, a hydraulic cylinder at one side of said machine, a plunger working in said cylinder and. extending from the machine and connected to the movable carriage at the opposite side thereof, and asecond motor mounted on said carriage for effecting its return movement; substantially as described.

In testimony whereof, I have hereunto set my hand.

JAMES L. BERNARD. Witnesses:

S. L. BERNARD, H. R. LUKENs. 

